High-Resolution Secondary Reconstructions with the Use of Flat Panel CT in the Clinical Assessment of Patients with Cochlear Implants

被引：47

作者：

Pearl, M. S. ^{[1
,3
]}

Roy, A. ^{[2
]}

Limb, C. J. ^{[2
,4
]}

机构：

[1] Johns Hopkins Univ Hosp, Div Intervent Neuroradiol, Sch Med, Baltimore, MD 21287 USA

[2] Johns Hopkins Univ Hosp, Dept Otolaryngol Head & Neck Surg, Sch Med, Baltimore, MD 21287 USA

[3] Childrens Natl Med Ctr, Washington, DC 20010 USA

[4] Peabody Conservatory Mus, Baltimore, MD USA

来源：

AMERICAN JOURNAL OF NEURORADIOLOGY | 2014年 / 35卷 / 06期

关键词：

VOLUME COMPUTED-TOMOGRAPHY; ELECTRODE ARRAY; POSTOPERATIVE ASSESSMENT; POSITION; LOCALIZATION;

D O I：

10.3174/ajnr.A3814

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

Radiologic assessment of cochlear implants can be limited because of metallic streak artifacts and the high attenuation of the temporal bones. We report on 14 patients with 18 cochlear implants (17 Med-El standard 31.5-mm arrays, 1 Med-El medium 24-mm array) who underwent flat panel CT with the use of high-resolution secondary reconstruction techniques. Flat panel CT depicted the insertion site, cochlear implant course, and all 216 individual electrode contacts. The calculated mean angular insertion depth for standard arrays was 591.9 degrees (SD = 70.9; range, 280 degrees). High-resolution secondary reconstructions of the initial flat panel CT dataset, by use of a manually generated field of view, Hounsfield unit kernel type, and sharp image characteristics, provided high-quality images with improved spatial resolution. Flat panel CT is a promising imaging tool for the postoperative evaluation of cochlear implant placement.

引用

页码：1202 / 1208

页数：7

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